Math exam paper (DAV School)

DAV Public School

Math exam paper ( DPS school)

Delhi Public School Paper 1

1. Real Numbers

Prove that    and     is an irrational number !

This is the most important question of this chapter which you might see on your exam paper. Here is the beautiful explanation in this video,

 

Prime factorisation  and LCM, HCF

Find all these concepts and solutions of ncert problems in this video.

 

Word problems on LCM and HCF

Finding LCM and HCF is not hard but we generally get confused whether we need to find LCM or HCF for the given word problem, So here is the trick which help to understand different situations.

4. Linear equation in two variables

All about linear equation in two variables.

In this video you will learn all about linear equations. Why they are called linear and why they have infinite solutions.

 

Graphing linear equations

Linear equations are graphed in 2D system (Cartesian system). In this video you will learn how to graph them. How to get solutions for linear equations when coefficient of x is a fraction. How to avoid getting points in fractions. Graphs of vertical and horizontal ines, how to find linear equations of word problems and also problems from ncert book.

3. Coordinate Geometry

 

This chapter introduce you with coordinate planes and cartesian (2D) system. You will learn how a point is located in 2D system and the concept of quadrants.

 

How to find equations of x axis, y axis and the vertical and horizontal  lines.

 

2. Polynomials

Factors, zeros, remainder, value of polynomial, all in one solution!

Behind most of the questions of exercise 2.2 and 2.3  there is only one concept. We can solve many type of problems by knowing only this concept and this chapter becomes so easy to understand. Here is the beautiful explanation in this video.

 

Super easy way to factor higher degree polynomials

Sometimes long division becomes difficult to use while factoring cubic polynomials or any higher degree polynomial. It is not easy to get first factor of cubic equation and then divide the equation by it to get next quadratic equation. So here is an extremely easy and quick way to divide the polynomial by a linear factor.

 

 

 

 

1. Number Systems

How to find Rational number between two given numbers ?

This video explain two methods to find rational numbers between two given numvers. First method is good to use when you need to find only one rational number between them, but when you need to find two or more than two rational numbers then it would be better to use second method.

You will also learn how to find rational numbers between two simple numbers and between two fractions. Finding rational numbers between simple numbers is easy but we have to be careful while finding rational numbers between fractions.

 

Amazing trick to answer all T/F questions based on number system.

Sometimes it become hard to learn all the short questions based on number system. So here is the trick which you can use to answer all such T/F  questions. All you need to learn is, only a diagram and you are all set. So here is the trick explained in this video.

How to convert repeating decimal numbers to p/q form?

The following video explain how to convert repeating decimal numbers to p/q form. These repeating decimal numbers, which have bars over them, can be divided into two categories. There are only 2 steps (equations) in first category and 3 steps (equations) in second category. Keeping these two categoires in mind, would make this concept unforgettable to you.

Learn to draw any sqrt number on a number line.

In this video you will learn how to use the concept of Pythagoras to draw any sqrt number on a number line. First we break the given number using Pythagoras and then analyse that, which part to be used as base and which part to be used as perpendicular. After watching this video, you would be able to draw any sqrt number on your own.